﻿/*************************************************************
 * Ultimate WebAssembly Virtual Machine (Version 2)          *
 * Copyright (c) 2025-present UlteSoft. All rights reserved. *
 * Licensed under the APL-2.0 License (see LICENSE file).    *
 *************************************************************/

/**
 * @author      MacroModel
 * @version     2.0.0
 * @date        2025-04-05
 * @copyright   APL-2.0 License
 */

/****************************************
 *  _   _ __        ____     __ __  __  *
 * | | | |\ \      / /\ \   / /|  \/  | *
 * | | | | \ \ /\ / /  \ \ / / | |\/| | *
 * | |_| |  \ V  V /    \ V /  | |  | | *
 *  \___/    \_/\_/      \_/   |_|  |_| *
 *                                      *
 ****************************************/

#pragma once

#ifndef UWVM_MODULE
// std
# include <cstdint>
# include <cstddef>
# include <concepts>
# include <bit>
// macro
# include <uwvm2/parser/wasm/feature/feature_push_macro.h>
// import
# include <uwvm2/parser/wasm/standard/wasm1/type/impl.h>
#endif

#ifndef UWVM_MODULE_EXPORT
# define UWVM_MODULE_EXPORT
#endif

UWVM_MODULE_EXPORT namespace uwvm2::parser::wasm::standard::wasm1::opcode
{
    enum class op_basic : ::uwvm2::parser::wasm::standard::wasm1::type::op_basic_type
    {
        /// @brief      Control Instructions
        /// @details    Control instructions have varying encodings. For structured instructions, the instruction sequences forming nested
        ///             blocks are terminated with explicit opcodes for end and else.
        /// @see        WebAssembly Release 1.0 (2019-07-20) § 5.4.1
        // Control flow
        unreachable = 0x00,
        // Noncontrolled
        nop = 0x01,
        // Control
        block = 0x02,
        loop = 0x03,
        if_ = 0x04,
        else_ = 0x05,
        end = 0x0b,
        // Control flow
        br = 0x0c,
        br_if = 0x0d,
        br_table = 0x0e,
        return_ = 0x0f,
        call = 0x10,
        call_indirect = 0x11,  // feature

        /// @brief      Parametric Instructions
        /// @see        WebAssembly Release 1.0 (2019-07-20) § 5.4.2
        // Stack manipulation
        drop = 0x1a,
        // Overloaded
        select = 0x1b,

        /// @brief      Variable Instructions
        /// @see        WebAssembly Release 1.0 (2019-07-20) § 5.4.3
        // Variables
        local_get = 0x20,
        local_set = 0x21,
        local_tee = 0x22,
        global_get = 0x23,
        global_set = 0x24,

        /// @brief      Memory Instructions
        /// @see        WebAssembly Release 1.0 (2019-07-20) § 5.4.4
        // Scalar load/store instructions
        i32_load = 0x28,
        i64_load = 0x29,
        f32_load = 0x2a,
        f64_load = 0x2b,
        i32_load8_s = 0x2c,
        i32_load8_u = 0x2d,
        i32_load16_s = 0x2e,
        i32_load16_u = 0x2f,
        i64_load8_s = 0x30,
        i64_load8_u = 0x31,
        i64_load16_s = 0x32,
        i64_load16_u = 0x33,
        i64_load32_s = 0x34,
        i64_load32_u = 0x35,
        i32_store = 0x36,
        i64_store = 0x37,
        f32_store = 0x38,
        f64_store = 0x39,
        i32_store8 = 0x3a,
        i32_store16 = 0x3b,
        i64_store8 = 0x3c,
        i64_store16 = 0x3d,
        i64_store32 = 0x3e,
        memory_size = 0x3f,  // feature
        memory_grow = 0x40,  // feature

        /// @brief      Numeric Instructions
        /// @see        WebAssembly Release 1.0 (2019-07-20) § 5.4.5
        // Literals
        i32_const = 0x41,
        i64_const = 0x42,
        f32_const = 0x43,
        f64_const = 0x44,
        // Comparisons
        i32_eqz = 0x45,
        i32_eq = 0x46,
        i32_ne = 0x47,
        i32_lt_s = 0x48,
        i32_lt_u = 0x49,
        i32_gt_s = 0x4a,
        i32_gt_u = 0x4b,
        i32_le_s = 0x4c,
        i32_le_u = 0x4d,
        i32_ge_s = 0x4e,
        i32_ge_u = 0x4f,
        i64_eqz = 0x50,
        i64_eq = 0x51,
        i64_ne = 0x52,
        i64_lt_s = 0x53,
        i64_lt_u = 0x54,
        i64_gt_s = 0x55,
        i64_gt_u = 0x56,
        i64_le_s = 0x57,
        i64_le_u = 0x58,
        i64_ge_s = 0x59,
        i64_ge_u = 0x5a,
        f32_eq = 0x5b,
        f32_ne = 0x5c,
        f32_lt = 0x5d,
        f32_gt = 0x5e,
        f32_le = 0x5f,
        f32_ge = 0x60,
        f64_eq = 0x61,
        f64_ne = 0x62,
        f64_lt = 0x63,
        f64_gt = 0x64,
        f64_le = 0x65,
        f64_ge = 0x66,
        // i32 arithmetic
        i32_clz = 0x67,
        i32_ctz = 0x68,
        i32_popcnt = 0x69,
        i32_add = 0x6a,
        i32_sub = 0x6b,
        i32_mul = 0x6c,
        i32_div_s = 0x6d,
        i32_div_u = 0x6e,
        i32_rem_s = 0x6f,
        i32_rem_u = 0x70,
        i32_and = 0x71,
        i32_or = 0x72,
        i32_xor = 0x73,
        i32_shl = 0x74,
        i32_shr_s = 0x75,
        i32_shr_u = 0x76,
        i32_rotl = 0x77,
        i32_rotr = 0x78,
        // i64 arithmetic
        i64_clz = 0x79,
        i64_ctz = 0x7a,
        i64_popcnt = 0x7b,
        i64_add = 0x7c,
        i64_sub = 0x7d,
        i64_mul = 0x7e,
        i64_div_s = 0x7f,
        i64_div_u = 0x80,
        i64_rem_s = 0x81,
        i64_rem_u = 0x82,
        i64_and = 0x83,
        i64_or = 0x84,
        i64_xor = 0x85,
        i64_shl = 0x86,
        i64_shr_s = 0x87,
        i64_shr_u = 0x88,
        i64_rotl = 0x89,
        i64_rotr = 0x8a,
        // f32 arithmetic
        f32_abs = 0x8b,
        f32_neg = 0x8c,
        f32_ceil = 0x8d,
        f32_floor = 0x8e,
        f32_trunc = 0x8f,
        f32_nearest = 0x90,
        f32_sqrt = 0x91,
        f32_add = 0x92,
        f32_sub = 0x93,
        f32_mul = 0x94,
        f32_div = 0x95,
        f32_min = 0x96,
        f32_max = 0x97,
        f32_copysign = 0x98,
        // f64 arithmetic
        f64_abs = 0x99,
        f64_neg = 0x9a,
        f64_ceil = 0x9b,
        f64_floor = 0x9c,
        f64_trunc = 0x9d,
        f64_nearest = 0x9e,
        f64_sqrt = 0x9f,
        f64_add = 0xa0,
        f64_sub = 0xa1,
        f64_mul = 0xa2,
        f64_div = 0xa3,
        f64_min = 0xa4,
        f64_max = 0xa5,
        f64_copysign = 0xa6,
        // Conversions
        i32_wrap_i64 = 0xa7,
        i32_trunc_f32_s = 0xa8,
        i32_trunc_f32_u = 0xa9,
        i32_trunc_f64_s = 0xaa,
        i32_trunc_f64_u = 0xab,
        i64_extend_i32_s = 0xac,
        i64_extend_i32_u = 0xad,
        i64_trunc_f32_s = 0xae,
        i64_trunc_f32_u = 0xaf,
        i64_trunc_f64_s = 0xb0,
        i64_trunc_f64_u = 0xb1,
        f32_convert_i32_s = 0xb2,
        f32_convert_i32_u = 0xb3,
        f32_convert_i64_s = 0xb4,
        f32_convert_i64_u = 0xb5,
        f32_demote_f64 = 0xb6,
        f64_convert_i32_s = 0xb7,
        f64_convert_i32_u = 0xb8,
        f64_convert_i64_s = 0xb9,
        f64_convert_i64_u = 0xba,
        f64_promote_f32 = 0xbb,
        i32_reinterpret_f32 = 0xbc,
        i64_reinterpret_f64 = 0xbd,
        f32_reinterpret_i32 = 0xbe,
        f64_reinterpret_i64 = 0xbf
    };

    enum class constexpr_op_basic : ::uwvm2::parser::wasm::standard::wasm1::type::op_basic_type
    {
        // Literals
        i32_const = 0x41,
        i64_const = 0x42,
        f32_const = 0x43,
        f64_const = 0x44,

        global_get = 0x23
    };
}

#ifndef UWVM_MODULE
// macro
# include <uwvm2/parser/wasm/feature/feature_pop_macro.h>
#endif
